Stuffing box construction



A. F.'MASURY 1,852,429 STUFFING BOX CONSTRUCTION Original Filed July 14, 1926 not only this function,

Patented Apr. 1932 lumrso STATES PATENT. OFFICE" ALFRED Is". MAS'U'BY, OF NEW' YORK, N. Y., ASSIGNOB' 'I'O THE alumna snocxmau- LA'IOB CORPORATION, OF WILMINGTON, DELAWARE, A CORPORATION 01 1am- WARE szrurr'mo BOX cons'rnuc'rlon flriglnal application fi led July 14, i928, Serial No. 122,528. Divided and thil application filed January 6,

' 1928. Serial 110-244.189.

This invention relates to stuflin boxes for propeller shafts in marine use. Vith a' view to maintaining a water-tight joint between the hull and the rotating shaft, it provides,

but also serves to relieve the, hull of the deleterious vibrations which exist in the shaft and are ordinarily transmitted to the hull and passenger accomniodations.

it is a well known fact that ropeller shafts receive occasional severe shoc is, as when the propeller is momentarily out of water, or when it strikes a floating object. In addition, the shafts also are under continual vibration clue to slight irregularities in the propellet construction which cause lateral thrusts in the shafts. Wherever the shafts are connected to the hull, these vibrations will be transmitted thereto, and the resulting effect frequently becomes quite objectionable, both from the stand oint of personal comfort and wear uponthe hbat.

This application is a division of the application of Alfred F. Masury, Serial N 0. 122,528 filed July 14, 1926, now Patent No. 1,7 55,549, issued April 22, 1930, for cushioning devices for marine propulsion, and has for an object the provision of construction which not only effectively seals the shaft in the bulkhead through which it passes, but also serves to permit a degree of movement of the shaft with respect thereto while cushioning such movement. The shaft movement does not impair the seal between it and'the bulkhead and the structure is deto cushion such movement effectively.

si ed urther and other objects of the invention will appear as the description proceeds and ef'erence will now be had to the accompanyin% drawings wherein:

igure 1 is a view in elevation, partly in section, showing a preferred form of stufling hon mounting for marine use.

Figure 2 is a front elevational view of the mounting shown in Figure l.

a stuffing-box The bulkhead of a boat is indicated at a in Figure 1 ofthe drawings. Within this bulkhead is carried a sleeve a", preferably of copper, through which the propeller shaft 6' may pass. I

This propeller shaft carries. a stufling box 0 of usual form, havin a packing nut c and a lock nut 0 Or inaril the stuflin box a is bolted directly to the bulkhead an the shaft is secured to the bulkhead in this manner, the packing hat a and lock nut 0' being disposed well within the interior of the vessel. In the present instance, the flange c which is formed on the stuflin box is received within an annular block of rubher, and the stuffing box is wholly supported upon the bulkhead through such annular block. This rubber block serves not only as a cushioning and stuifin box but also effectively seals the joint there tween.

A suitable housing e carries the block 11 and is secured to the bulkhead by bolts f. The relative sizes of the block and housing are such that the latter places the former under a desired degree of com ression when the bolts f are tightened. is resultsin causing the rubber to flow around the flange and bulkhead and not only seals the joint therebetween but also provides a positive mounting for the shaft and stuflin box. Vibrations setup in the shaft wil be deadened by the cushioning element and a far more satisfactory operation results.

The details of construction may be varied to suit the convenience of various installations and the invention is not to be limited save as defined in the appended claim.

I claim as my invention:

A connection between the hull. of a vessel and a pro eller shaft comprising a stufling box there or formed with a flange an annulus of yielding non-metallic. resilient material en ging the flange. and formifiha water-tig t connection therewith, alme 'c means between the bulkhead I annulus engaging the yielding non-metallic material and forming a Water-tight connection between such material and the hull, and bolts to secure the annulus to the hull and retain the yielding non-metallic material under compression and support the stufiing box on the hull solely through engagement with the yielding materia This specification signed this 226. day of December, A. D. 1927.

ALFRED F. MASURY.- 

